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CBSE Class 10 Maths (Standard) 2016 · Paper 30/1 · Question 20

Probability 3 marks Medium

Three different coins are tossed together. Find the probability of getting

(i)exactly two heads
(ii)at least two heads
(iii)at least two tails.

iexactly two heads
iiat least two heads
iiiat least two tails

Answer

P (exactly two heads) = \frac{3}{8}

,

P (at least two heads) = \frac{1}{2}

,

P (at least two tails) = \frac{1}{2}

.

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